Skip to content
KStart free
AI InfrastructureDefenseQuantumAll studies →

BIIB US Equity

Biogen Inc.Health Care · Biological Products, (No Diagnostic Substances) · CIK 875045 · FY ends Dec 31
$221.56
+9.01 (+4.24%)
USD · as of 2026-08-19 · marketstack
14 8-K filings · 0 13D · 8 13G
DateEventWhat happened / filerSource
2026-08-0613G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLCsec.gov ↗
2026-07-298-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-07-018-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-06-108-K 5.07Submission of matters to a vote of security holderssec.gov ↗
2026-06-108-K 9.01Financial statements and exhibits (amendment)sec.gov ↗
2026-06-0513G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLCsec.gov ↗
2026-05-148-K 7.01Regulation FD disclosuresec.gov ↗
2026-05-148-K 2.03Creation of a direct financial obligationsec.gov ↗
2026-05-148-K 2.01Completion of acquisition or disposition of assetssec.gov ↗
2026-05-148-K 1.01Entry into a material definitive agreementsec.gov ↗
2026-05-0613G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by FMR LLCsec.gov ↗
2026-04-2913GSchedule 13G filed — ≥5% beneficial owner (passive) · by VANGUARD CAPITAL MANAGEMENT LLCsec.gov ↗
2026-04-298-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-04-068-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-03-318-K 8.01Other eventssec.gov ↗
2026-03-318-K 1.01Entry into a material definitive agreementsec.gov ↗
2026-03-2613G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INCsec.gov ↗
2026-03-118-K 5.02Departure/election of directors or officers; compensationsec.gov ↗
2026-02-118-K 8.01Other eventssec.gov ↗
2026-02-118-K 5.02Departure/election of directors or officers; compensationsec.gov ↗
2026-02-068-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-02-0513GSchedule 13G filed — ≥5% beneficial owner (passive) · by FMR LLCsec.gov ↗
2026-01-138-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2025-11-1413G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by PRIMECAP MANAGEMENT CO/CA/sec.gov ↗
2025-11-1013GSchedule 13G filed — ≥5% beneficial owner (passive) · by STATE STREET CORPsec.gov ↗
2025-10-308-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2025-10-148-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
Source: SEC EDGAR (public domain) · history starts 2025-10-14

Every row is a filed document, checked against its EDGAR index.